| 摘要 |
PURPOSE:To prevent the evaporation of Ca in molten steel and to increase the deoxidizing and desulfurizing effects by using a Ca-Al alloy, CaO and Al2O3 as principal components in a prescribed ratio and uniting CaF2 with them. CONSTITUTION:This metal refining agent consists of 20-50% Ca-Al alloy and 80-50% CaO+Al2O3 as principal components and of 0-30% CaF2. When the refining agent is added to molten steel, the sudden contact of the alloy phase with the molten steel is prevented, and the melting proceeds slowly. As a result, the evaporation of Ca is reduced, and the deoxidizing and desulfurizing effects on the molten metal are increased. |
